Ange Postecoglou insisted he should take the blame for two more dropped points after a 1-1 draw with Dundee United and not the Hoops players.
It looked like becoming a routine Premiership Parkhead win for the hosts when Liel Abada headed his side into the lead in the first half.
But just two minutes later United would hit back through Ian Harkes and that's how the match remained – despite Celtic smashing the crossbar on three separate occasions.
It leaves Celtic six points behind Rangers at the top and sitting in sixth place in the table with Bayer Leverkusen up next on Thursday night in the Europa League.
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